SU106907A2 - The method of obtaining alpha-methylstyrene - Google Patents
The method of obtaining alpha-methylstyreneInfo
- Publication number
- SU106907A2 SU106907A2 SU328423A SU328423A SU106907A2 SU 106907 A2 SU106907 A2 SU 106907A2 SU 328423 A SU328423 A SU 328423A SU 328423 A SU328423 A SU 328423A SU 106907 A2 SU106907 A2 SU 106907A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- methylstyrene
- mixture
- obtaining alpha
- alpha
- isopropylbenzene
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 6
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 title description 3
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- BDCFWIDZNLCTMF-UHFFFAOYSA-N 2-phenylpropan-2-ol Chemical compound CC(C)(O)C1=CC=CC=C1 BDCFWIDZNLCTMF-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 description 1
- XPNJBHZOTPAOET-UHFFFAOYSA-N 3-ethylidenecyclohexa-1,4-diene Chemical class C[C]c1ccccc1 XPNJBHZOTPAOET-UHFFFAOYSA-N 0.000 description 1
- WPJYTHQCNMELCD-UHFFFAOYSA-N 4-methylhexa-1,3,5-trien-3-ylbenzene Chemical compound C=CC(C)=C(C=C)C1=CC=CC=C1 WPJYTHQCNMELCD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Изобретение относитс к способам получени синтетического каучука , в частности, к получению альфа-метилстирола, вл ющегос вторым мономером нри производстве дивинил-метнлстирольных каучуков .The invention relates to methods for producing synthetic rubber, in particular, to the preparation of alpha-methylstyrene, which is the second monomer in the production of divinyl methyl styrene rubbers.
Способ нолучени метилстирола псггр моП AorH/TporoHH;iaiuieil изопронилбсн .юл) оииспн п пит. СП. № 1ПС)(.Methylstyrene nosification method psgrrnOr AorH / TporoHH; iaiuieil isopronylsn .Jul) oiispn pit. JV № 1ПС) (.
Отличие от него предлагаемого изобретени заключаетс в том, что к гидроперекиси изопропилбеизолп , в смеси с исходным изопропилбепзолом , прибавл ют водный раствор иделочи, смесь нагревают при перемешивании, отдел ют углеводородны) слой и из него лиметилфеиилкарбннол , который известными приемами дегидратируют в альфа-метилстирол.The proposed invention differs from the fact that an aqueous solution and an addition are added to the isopropylbeisolp hydroperoxide, mixed with the starting isopropylbezol, the mixture is heated under stirring, the hydrocarbon layer is separated and the methylmethylphenylcarbonylnol, which is dehydrated in alpha-methylteamideetermeter, is removed from the mixture under stirring, and is liquefied with hydrogen.
Процесс получени метилстирола осуществл етс следующим образом . В результате частичного окислени изонропилбензола получаетс реакционна масса, содержап1а около 2070 гидроперекиси, около 170/0 лиметилфеполкарбинола, около ацетофенола и примерно изопроиилбензола. Указанна реакционна масса подогрсиастс доThe process for the preparation of methylstyrene is carried out as follows. As a result of the partial oxidation of isonropylbenzene, a reaction mass is obtained, containing about 2070 hydroperoxides, about 170/0 limylphepolcarbinol, about acetophenol and about isopropylbenzene. Said reaction mass of preheaters to
70° и обрабатываетс 32%-ным раствором едкого натра, который добавл етс постенонно, при энергичном перемешивании; на 1 т массы указанного состава нужно вз ть 41кг едкого натра. Температуре при этом не дают подниматьс выше 90°. По окончании прилипани щелочи температуру смеси поднимают в leпение 1 часа до 120 и пыдержиплют при этой температуре 1 час. Углеводородный слой после н(.елочной обработки содержит диметилфенилкарбинола ,,, изопропилбензола 48% и ацетофенола . После отгонки из углеводородного сло изопропилбензола в кубовом остатке остаетс технический диметилфенилкарбинол (907о). Дегидратацией диметилфенилкарбинола известными методами в паровой или жидкой фазе получают альфа-метилстирол с выходом не менее , от теории. Метилстирол легко отдел етс от ацетофенола а чистом виде.70 ° and treated with 32% sodium hydroxide solution, which is added postenonally, with vigorous stirring; 41 pounds of sodium hydroxide should be taken per 1 ton of the mass of the composition indicated. The temperature is not allowed to rise above 90 °. At the end of alkali sticking, the temperature of the mixture is raised to 1 hour to 120 hours and the mixture is kept at this temperature for 1 hour. Hydrocarbon layer after n (cell processing contains dimethylphenylcarbinol, isopropylbenzene 48% and acetophenol. After distillation of isopropylbenzene from the hydrocarbon layer in the bottom residue, technical dimethylphenylcarbinol remains (907 °). however, from theory. Methyl styrene is easily separated from acetophenol in its pure form.
Предмет .изобретени Subject matter
Способ получени альфа-метилстирола пуюм дегндратацнн д № 106907- 2-The method of obtaining alpha-methylstyrene puyum degndratacnn d No. 106907-2-
мртилфенилкарбинолп, отличаю-нии, отдел ют углеводородныйmrtilphenylcarbinolp, in difference, separates the hydrocarbon
щийс тем, что к гидроперекисислой, из которого выдел ют диизопропилбензола в смеси с исход-метилфенилкарбпнол, после -чего ным изопропилбензолом, получен-чdue to the fact that a hydroperoxide solution, from which diisopropylbenzene is separated in the mixture with the starting methylphenylcarbene, after which isomeric isopropylbenzene, is obtained
ным по авт. св. № 106666, прибав-последний подвергают дегидрата-, л ют водный раствор щелочи,Дии известными приемами в альфасмесь нагревают при перемешива-метилстирол.by autom. St. No. 106666, adding-the latter is subjected to a dehydrate; an aqueous solution of an alkali is poured; Diya is heated in a mixture of methystyrene with known methods in alfasmés.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU328423A SU106907A2 (en) | 1947-01-28 | 1947-01-28 | The method of obtaining alpha-methylstyrene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU328423A SU106907A2 (en) | 1947-01-28 | 1947-01-28 | The method of obtaining alpha-methylstyrene |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU106666 Addition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU106907A2 true SU106907A2 (en) | 1956-11-30 |
Family
ID=48406214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU328423A SU106907A2 (en) | 1947-01-28 | 1947-01-28 | The method of obtaining alpha-methylstyrene |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU106907A2 (en) |
-
1947
- 1947-01-28 SU SU328423A patent/SU106907A2/en active
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